I stripped the screw T40-45? in the fender stay. Im not sure how best to extract this. Any thoughts?
Thanks!

 

Cut a slot in it and hit it with the impact screwdriver,

 

Left handed drill bit. The slot thing works too. Use a cutoff wheel in a dremel tool.

 

thanks ill try and let you know

 

Unfamiliar with exact bolt but is it possible that bolt has a thread locker that requires heat prior to removal?

 

Try this before you break out the dremel. First confirm the correct driver, T40 or T45. Source some fine sand, (mason's sand, pool filter sand, or scrape some off of fine sandpaper). Dip the tip of the driver in water, and then the sand. Then use a impact driver. Many times, the sand will create enough "bite" to free the fastener. I've done this on recessed fasteners when cutting a slot was not an option. YMMV.

 

 

its a 5/16 drill bit to the center and take the top off

 

No doubt it works for the smaller sizes. Best be swinging a big hammer when cutting grooves on the larger sizes.

 

That's how I helped friends service their Jap bikes back in the 1960s. All being well the drill vibration will jog the darned thing loose before the head comes off.